我如何模拟没有索引的Key，Value对（有角度）列表？

Question

I am unit testing an angular application using Jasmine and i am in it. The application has a back-end written in Spring boot , which exposes some API's.

The content received from one of the API's (GET request) is a List of Mapped Key,Value(Object,Value) pairs .

What i want is to mock the response such that it looks the same as below (result).

Like this => [
                 key: value *//does not have an index*
             ]

Accessed like this => this.list = result['someList'];

For example,

constructor(private httpClient: HttpCLient) {}

ngOnInit() {
    this.getAll().subscribe(result => {
        this.someListInsideResult = result['someList'];
        console.log('result: ', result);
        console.log('someListInsideResult: ', someListInsideResult);
    }
}

getAll() {
    this.headers = new HttpHeaders().set('X-Authorization', 'Bearer  ' + token).set('X-Requested-With', 'XMLHttpRequest').set('Content-Type', 'application/json');
    return httpClient.get(url, {headers: headers});
}

console:

// actual respose(result)
result: [
            key1: value1
            key2: value2
            ...
            ...
            someList: 0: "stringValue"
                      1: "ENUM"
                      2: null
        ]

// list inside the response
someListInsideResult: 0: "stringValue"
                      1: "ENUM"
                      2: null

if anyone can help that will very grateful.

thanks in advance.

Answer 1

Move the http call to a service, Lets say UserService :

UserService.service.ts

export class UserService{

getAll(): Observable<any> {
   this.headers = new HttpHeaders().set('X-Authorization', 'Bearer  ' + token).set('X- 
      Requested-With', 'XMLHttpRequest').set('Content-Type', 'application/json');
   return httpClient.get(url, {headers: headers});
}
} 

In Controller, inject the service and use as

User.component.ts

ngOnInit() {
    this.userSvc.getAll().subscribe(result => {
        this.someListInsideResult = result['someList'];
        console.log('result: ', result);
        console.log('someListInsideResult: ', someListInsideResult);
    }
}

Then for testing create a mock service:

MockUserService.ts

export class MockUserService {

   getAll() {
    return of({
        key1: 'key1',
        someList : [{ "0" : "stringValue"}]
    })
   }

}

then in User.component.spec.ts

beforeEach(async(() => {
    TestBed.configureTestingModule({
        imports: [],
        declarations: [UserComponent],
        providers: [
          { provide: UserService, useClass: MockUserService }] // <-- Here we have injected our Mock
    }).compileComponents();
}));